A curve in a road forms part of a horizontal circle. as a, Ask an Expert

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Q. A small, 300 g cart is moving at 1.80 m/s on an air track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. What is the speed of the large cart after the collision?

Q. A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, the total force exerted on the driver has magnitude 120 N. What are the magnitude and direction of the total vector force exerted on the driver if the speed is 19.0 m/s instead?

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